#include <stdio.h>

void f1 (void) { printf("%i\n", 1); }
void f2 (void) { printf("%i\n", 2); }
void f3 (void) { printf("%i\n", 3); }
void f4 (void) { printf("%i\n", 4); }
void f5 (void) { printf("%i\n", 5); }
void f6 (void) { printf("%i\n", 6); }
void f7 (void) { printf("%i\n", 7); }
void f8 (void) { printf("%i\n", 8); }
void f9 (void) { printf("%i\n", 9); }

typedef void(*void_fp)(void);

void_fp fp_tbl[] = {f2, f3, f4};

// There is a basic check that excludes all functions that aren't used anywhere
// This ensures that check can't work in this example
const void_fp fp_all[] = {f1, f2 ,f3, f4, f5 ,f6, f7, f8, f9};

void func(void_fp fp, int i)
{
  // It is concievable this could be checked and seen the first value
  // of the array is unchanged but is kind of a weird edge case.
  fp_tbl[2] = fp;
  const void_fp fp2 = fp_tbl[1];
  fp2();
}

int main()
{
  for(int i=0;i<3;i++)
  {
    func(fp_all[i+3], i);
  }

  return 0;
}
